code: def test_map_invalid(self):
      with self.assertRaises(ValueError):
          map_coords(lambda x: x, {"type": ""})
  
file_path: geojson/tests/test_coords.py
imports: import unittest
  import geojson
  from geojson.utils import coords, map_coords
label_desc: Use image node_id 13 for calling the CoordsTestCase obj's underlying member method code with example usage: obj.test_map_invalid() without return types